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geometrical optics
miscellaneous concerning paraxial conjugation


depth of field and maximum defocus for a given optical system and an object at infinity


Caution
Fill in all input cells.
Choose all parameters unit.
fi, D and Dr are strictly positive. Other parameters are algebric.
Positive direction is according the horizontal arrow in the bottom right of the scheme.

InputValueunit
fi
D
Dr
OutputValueUnit
smto be calculated
dxito be calculated
depth of field and maximum defocus for a given optical system and an object at infinity
fi : effective focal length D : clear aperture Dr : maximum diameter of the image spot sm : minimum distance from the primary principal plane to the object plane ( depth of field ) dxi : maximum defocus

Note
This calculation page can not detect all unrealistic inputs.



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